Thomas Paine

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  1. Mits 500M control - need help with ladder array thingy

    Thomas Paine replied to Thomas Paine's topic in Mitsubishi

    cool, you helped me figure out that the value of R2900 is equal to bit selection parameters line 1&2. i guess i could force if i had to, but we won't go there yet.  

  2. Mits 500M control - need help with ladder array thingy

    Thomas Paine replied to Thomas Paine's topic in Mitsubishi

    wow thanks man, that makes perfect sense!   I have no clue what is acting on R2900 thru R2903.  When i search R2900, it only comes up with this line seen above.  It seems embedded in another function, i'll have to find it and report back.    
  3. Hey guys, first post!  Friends at Practical Machinist sent me over here b/c we were stumped.   I have a Mitsubishi 500M control CNC machine.  There is a section of the ladders that i don't understand, and Mitsubishi couldn't help, and the OEM is defunct.  I do not have a hardcopy of the ladder circuits. I have an output , [Y13], that i can't get to turn on because of an internal relay | M453 |       see pic 1 When i searched for relay M453, it seems as if it's in some sort of array function.  see pic 2 None of the relays from M448 thru M512 ever turn on.  I understand that all these are controlled thru this circuit, but i have no clue what is going on with the R registers, and how the heck these internal relays can be turned on. Can you guys help explain?   Thanks!